Final answer:
The Upper Paleolithic period saw advances in stone tools such as the increased use of bone and antler, the shift to blade tools, and the emergence of various tool industries.
Step-by-step explanation:
The Upper Paleolithic period, which took place approximately from 43,000-26,000 BCE, witnessed several stone tool advances. During this time, humans began using bone and antler more extensively in tools and jewelry. They also shifted from the manufacture of round flakes to blade tools, which had a longer cutting edge and were more efficient. Additionally, there were various tool industries within the category of blade tools, including the Aurignacian, Gravettian, Solutrean, and Magdalenian, each with its distinctive features.